Both parties must present valid and current government-issued photo ID. Appointments are required. Marriage License Application.If you have not done so, please self-schedule an appointment with the County Clerk's office after completing this application. Both parties must appear in person and bring valid picture identification to the County Clerk's Office to apply for a marriage license in California. Complete the Marriage License Online Application (recommended). OR fill out the Marriage License Printable Application and bring it to your appointment. Make an appointment at the San Diego County Clerk's office. We suggest you download the application and fill it out before your appointment to save time at the County Clerk's office. No blood tests are required. You can apply for a marriage license online or fill out a physical form to bring to your appointment.